Gas-producer.



P6tented Ian. 29, I901. w. H. BRADLEY.

GAS PRODUCER.

-(Application filed Oct. 9, 1900.

2 Sheets Sheet (No Model.)

W ZM WM 1404M WITNESSES no: mails PETERS 0a.. mfaumcq wuummn. c. c.

Patented Ian. 29, I90l.

W. H. BRADLEY.

GAS PRODUCER.

(Application filed Oct. 9, 1900.)

2 Sheets-Sheet 2.

(No Model.)

, mvem'on WITNESSES m: norms PETERS c0. mom-urns" WASHINUTGN, n. c.

UNITED STATES PATENT QFEICE.

WILLIAM H. BRADIJEY, OF BELLEVUE, PENNSYLVANIA, ASSIGNOR TO THE DUFF PATENTS 00., OF PITTSBURG, PENNSYLVANIA.

GAS-PRODUCER.

SPECIFICATION forming part of Letters Patent No. 666,795. dated January 29, 1901.

Application filed October 9, 1900. Serial No. 32,474. (No model.)

To all whom it may concern.-

Be it known that LWILLIAM H. BRADLEY,

' of Bellevue, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Gas-Producers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a sectional side elevation of my improved gas-producer, and Fig. 2 is a horizontal cross-section of the same above the level of the grates.

My invention relates to that type of gasproducers known as Duff producers, such as disclosed in reissue Letters Patent of the United States No. 11,323, granted to E. J. Duff on January 26, 1896; and its object is to improve the action of such producers and enlarge their capacity without materially increasing their size.

In the drawings, 2 represents the producershell, which may be either round, as shown, square, rectangular, or of any other desired. shape. This shell is provided with the usual refractorylining and may be supported upon suitable girders 3 3, extending beneath the shell.

The grate-surface of the producer is com posed of several angular ridge-grates 4, which extend radially from a common center and of which I have shown four, thoughithere may be three or any desired number beyond three. These grates are supported at their outer ends by side walls, and I have shown their inner ends as carried on the girders, though vertical posts may be used at the inner ends of the grates for supporting them, if desired. Each of the ridge-shaped grates is composed of perforated plates or bars, which allow the air forced in through blowers 5 to pass upwardly through them into the superimposed bed of fuel. I show two of the blowers, but may use any number desirable. The outletfiue 6 leads from the upper part of the prod ucer, preferably opposite to one of the blowers, and takes the gas to the glass-furnace, puddling-fu rnace, or any other furnace or structure to be heated.

The top of the producer 7 is provided with a central hopper 8 and charging-bell 9, which is provided with a counterweighted lever 10 in the form shown; but any suitable charging device may be used and the top may be closed, in which case the fuel is fed in through side openings extending in the side Walls of the producer. The top shown in the drawings is also provided with poke-holes having swinging closures 11 and by which the operator can introduce rods or implements to act upon the bed. The poke-holes may also be made in the sides of the producer, if desired.

I preferably provide the producer with a water seal consisting of a large central trough or tank 12, which is provided with upwardlyinclined extensions 13, which project outwardly beyond the sides of the producer and are preferably made the same in number as the number of the grates. The ashes or resi dues are raked out from the dish,which is filled with water, through the extensions, and these extensions also give access to operate with a rod or poker beneath each one of the grates without crossing the free open space between them. This is of advantage, because it is preferable to leave the ashes in the free spaces undisturbed. I may, however, provide only two extensions on opposite sides of the producer, though I prefer the form shown.

It will be noticed that I have shown the inner ends of the grate-plates as provided with mating recesses which form slots at the junctures of the plates. This is of ad vantage, because it allows air to pass up through the end portions of the grate, and thus prevents their burning out at the junctures.

In the operation of the producer the air is forced in through the blowers by suitable steam-injectors or otherwise and passes up through the perforated gratings into the charge. As these gratings are uniformly arranged beneath the charge, the air acts regularly and equally upon the bed. The ashes or residues descend into the free spaces between the radial grates and are drawn out from the extensions of the water seal.

The advantages of my invention result from the radial arrangement of the plurality of inclined grate-surfaces, which give an equal action on all parts of the charge, and hence increase the efliciency and productiveness and give better and more uniform quality of gas. The providing of a raking-out trough beneath each grate is of advantage in reaching the interior of the producer, and a very 2. A gas-producer provided with a water seal and having a central perforated grate portion and at least three ridge-shaped grates extending radially therefrom with free spaces between them; substantially as described.

3. A gas-producer having at least three radial grates whose inner ends are connected together forming a central perforated grate portion, and a water seal having extensions beneath and registering with at least a portion of the grates; substantially as described.

4. A gas-producer provided with a water 'seal, and having at least three stationary grates extending radially from a common sen ter, the inner ends of the grates being joined byinelined ridges, and said inner ends of the grates having top perforations; substantially as described.

5. A gas-producer having a Water seal and provided with at least three radial grates whose inner ends are connected together, forming a central grate portion provided with perforations; substantially as described.

6. A gas-producer having at least three grates extending radially from a common center and having free spaces between them for the descent of ashes, and a Water-sealing trough having rake-out extensions beneath each grate; substantially as described.

7. A gas-producer having at least three ridge-shaped perforated grates extending radially from the center of the producer, and slots at the inher meeting ends of the grates to allow air to pass up at these points; substantially as described.

In testimony whereof I have hereunto set my hand.

W. H. BRADLEY.

Witnesses:

H. M. OORWIN, Gno. B. BLEMING. 

